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Impact of different fluoride concentrations and pH of dentifrices on tooth erosion/abrasion in vitro


Moron, B M; Miyazaki, S S H; Ito, N; Wiegand, A; Vilhena, F; Buzalaf, M A R; Magalhães, A C (2013). Impact of different fluoride concentrations and pH of dentifrices on tooth erosion/abrasion in vitro. Australian Dental Journal, 58(1):106-111.

Abstract

BACKGROUND: This in vitro study analysed the effect of different fluoride concentrations in acidic or neutral liquid dentifrices in protecting enamel and dentine from erosive and abrasive wear. METHODS: Bovine enamel and dentine specimens (n = 132) were randomly allocated to 11 groups (each n = 12): experimental liquid dentifrices with 550 ppm F, 1100 ppm F, 5000 ppm F or 0 ppm F/placebo (each at pH 4.5 and pH 7.0); and commercial dentifrices with 550 ppm F (Colgate Baby, pH 7.0), 1100 ppm F (Crest, pH 7.0) and 5000 ppm F (Duraphat, pH 7.0). The specimens were subjected to erosion for 90 seconds, 4 times/day, over 7 days. Immediately after the first and last erosion, the specimens were brushed for 15 seconds using one of the dentifrices. Tooth wear was measured profilometrically (μm) and analysed by ANOVA (p < 0.05). RESULTS: All fluoridated liquid dentifrices significantly reduced enamel wear compared to the placebo and commercial dentifrices. Only liquid dentifrices with 1100 and 5000 ppm F significantly reduced dentine wear compared to placebo dentifrice. The pH had no effect, but the consistency had a significant impact on the effect of dentifrices. CONCLUSIONS: Liquid dentifrices with high F concentration appear to be a good option to prevent tooth wear.

Abstract

BACKGROUND: This in vitro study analysed the effect of different fluoride concentrations in acidic or neutral liquid dentifrices in protecting enamel and dentine from erosive and abrasive wear. METHODS: Bovine enamel and dentine specimens (n = 132) were randomly allocated to 11 groups (each n = 12): experimental liquid dentifrices with 550 ppm F, 1100 ppm F, 5000 ppm F or 0 ppm F/placebo (each at pH 4.5 and pH 7.0); and commercial dentifrices with 550 ppm F (Colgate Baby, pH 7.0), 1100 ppm F (Crest, pH 7.0) and 5000 ppm F (Duraphat, pH 7.0). The specimens were subjected to erosion for 90 seconds, 4 times/day, over 7 days. Immediately after the first and last erosion, the specimens were brushed for 15 seconds using one of the dentifrices. Tooth wear was measured profilometrically (μm) and analysed by ANOVA (p < 0.05). RESULTS: All fluoridated liquid dentifrices significantly reduced enamel wear compared to the placebo and commercial dentifrices. Only liquid dentifrices with 1100 and 5000 ppm F significantly reduced dentine wear compared to placebo dentifrice. The pH had no effect, but the consistency had a significant impact on the effect of dentifrices. CONCLUSIONS: Liquid dentifrices with high F concentration appear to be a good option to prevent tooth wear.

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Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Preventive Dentistry, Periodontology and Cariology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:16 Jan 2014 15:01
Last Modified:05 Apr 2016 17:25
Publisher:Wiley-Blackwell
ISSN:0045-0421
Additional Information:© Impact of different fluoride concentrations and pH of dentifrices on tooth erosion/abrasion in vitro 2013. This is the author's version of the work. It is posted here by permission of Copyright © 2013 John Wiley for personal use, not for redistribution. The definitive version was published in Australian Dental Journal, Volume 58, Issue 1, pages 106–111, March 2013. http://dx.doi.org/10.1111/adj.12016
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1111/adj.12016
PubMed ID:23441800

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